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Maryland · County guide

Baltimore County, Maryland property tax appeals

A Baltimore County property tax appeal starts with the Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation), then the Baltimore County Property Tax Assessment Appeal Board. This season's deadline has not been announced yet. Our forecast for the Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation): Dec 31, 2026 – Jan 4, 2027 (not an official date). There is no filing fee.

This season

Next deadline
Expected Dec 31, 2026 – Jan 4, 2027
Forecast, not an official date
Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation)
Source: Maryland Code, Tax - Property § 14-503 (Maryland General Assembly)Last checked

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Here the check uses your own figures: you enter the assessed value from your notice or tax bill and the year you bought. We compare how much it has grown with the house price index for your area and show the numbers as your figures. You decide and file yourself.

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Filing fee
No filing fee
Where to file first
Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation)
Office address
Hampton Plaza 300 E. Joppa Road, Suite 602 Towson, MD 21286 · (410) 512-4900
Our coverage
Free check available
  • Independent guide — not affiliated with Baltimore County or any government agency.
Last updated
October 1, 2026
Sources last checked
October 1, 2026
Status
Verified guide

How we verify facts

What are the Baltimore County reassessment results, tax rates and caps?

How much did Baltimore County reassessments change values?

Baltimore County reassessment results by year
ReassessmentAreaCompared withResidentialCommercialAll propertyHomes that rose
January 1, 2026[1]Area 22023 values+12.4%+11.3%+12.1%69,404 of 80,766 (85.93%)
January 1, 2025[2]Area 12022 values+25.3%+15.9%+22.6%—
January 1, 2024[3]Area 32021 values+26.2%+14.4%+23.3%—

What are the Baltimore County tax rates and caps?

Assessment limitsCounty homestead credit cap (yearly limit on the taxable increase)
Baltimore County's homestead credit cap for 2026-2027 tax bills is 4% a year (towns inside the county may set their own cap).[4]
Property tax rateConstant yield
SDAT certified a fiscal 2027 constant yield tax rate of $1.0593 per $100 for Baltimore County, against the fiscal 2026 rate of $1.1000; a rate above the constant yield rate requires advertising and a public hearing.[5]
Property tax rateCounty rate
For 2026-2027 the Baltimore County real property tax rate is $1.1000 per $100 of assessment, plus the State rate of $0.1120.[4]

When and where do I file a Baltimore County property tax appeal?

Who hears a Baltimore County appeal?

The stages in order. We are not affiliated with any of these offices.

  1. 1

    Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation)

    Filing: appeal

  2. 2

    Baltimore County Property Tax Assessment Appeal Board

    Filing: appeal

Where is the Baltimore County office?

Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation)[9]

Baltimore County Supervisor of Assessments (SDAT local assessment office)

Address
Hampton Plaza 300 E. Joppa Road, Suite 602 Towson, MD 21286
Fax
(410) 321-2119
Hours
8:00 to 4:30

Baltimore County Property Tax Assessment Appeal Board[10]

Baltimore County Property Tax Assessment Appeals Board

Address
Hampton Plaza, 300 E. Joppa Road, Suite 404, Towson, MD 21286

Tax collector[8]

Baltimore County Office of Budget and Finance

Address
400 Washington Avenue, Room 150, Towson, MD 21204

We are not affiliated with this office. Hours can change, so call before you visit.

Has the Baltimore County property tax appeal deadline been announced?

Upcoming
Not announced yet
Forecast
Expected to close between December 31, 2026 and January 4, 2027
Last checked

We will update this page when the new dates are posted.

Which Baltimore County filing windows are coming up?

Baltimore County filing windows
ClosesAreaWho hears itStatus
Expected Dec 31, 2026 – Jan 4, 2027CountywideBaltimore County Supervisor of Assessments (State Department of Assessments and Taxation) · Official source · Last checked Sep 29, 2026Forecast, not an official date

How do I file a property tax appeal in Baltimore County?

Baltimore County Property Tax Assessment Appeal Board: There is no fee to appeal to the Baltimore County Property Tax Assessment Appeal Board.

Filing feeBaltimore County Property Tax Assessment Appeal Board
There is no fee to appeal to the Baltimore County Property Tax Assessment Appeal Board.[6]

Upcoming appeal deadlines in every county we track

Which Maryland rules apply in Baltimore County?

These rules are the same in every Maryland county. Each link opens the rule on the Maryland page, where the Maryland-wide sources are listed.

What do Baltimore County property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

How much could a lower assessment save on Baltimore County property taxes?

Tax rate used: $1.212 per $100 of assessed value (county and State rates, fiscal 2026-27).

How much could a lower assessment save on Baltimore County property taxes?
ExampleTax saved
$10,000 less assessed value$121 a year
10% less on a home assessed at $208,800 (the county's 25th percentile)$253 a year
10% less on a home assessed at $291,600 (the county's median)$353 a year
10% less on a home assessed at $416,600 (the county's 75th percentile)$505 a year

These are examples: the tax rate times a lower assessed value. Exemptions, credits, caps and phase-ins can make the real change smaller. This is not a prediction for any home. Rate source: Tax Rates 2026-2027 - Tax Table & Homestead Credit Caps - July 2026 (SDAT PDF).

What do homeowners in Baltimore County pay in property tax?

The median owner-occupied home in Baltimore County was worth $349,300, and the median property tax its owners paid was $3,736 a year, according to the Census Bureau's American Community Survey.

Median home value
$349,300
Margin of error ±$2,553.
Median property tax paid per year
$3,736
Margin of error ±$30.
Median tax as a share of median value
1.07%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
220,908
Margin of error ±2,453.

These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.

They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.

From the county's assessment and appeal records

Homes in the county's assessment records
264,745
Median assessed value
$291,600
Middle half of assessed values
$208,800 to $416,600

Source: The county's open assessment data, aggregated by us (each home's latest final value, tax years 2024 to 2026). Our calculation from public records; not an opinion of any home's value.

How Baltimore County home assessments are spread

Assessed values of 264,745 homes in the property classes our free check covers (RES, SFR, TH, CND), each home's latest final value, tax years 2024 to 2026. Half are between $208,800 and $416,600; the median is $291,600. The last bar holds everything above it.Source: Assessment records from the county's open data (each home's latest final value, tax years 2024 to 2026), retrieved Sep 27, 2026; our calculation.

Median home value: Baltimore County compared

  1. Baltimore County$349,300
  2. Typical Maryland county$380,550
  3. Typical US county$185,300

Typical Maryland county $380,550; Baltimore County $349,300; Typical US county $185,300

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 24 in Maryland and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077.

Median property tax paid: Baltimore County compared

  1. Baltimore County$3,736
  2. Typical Maryland county$3,389
  3. Typical US county$1,619

Baltimore County $3,736 a year; Typical Maryland county $3,389 a year; Typical US county $1,619 a year

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 24 in Maryland and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25103.

Median home assessment by election district

  1. Election district 10$634,100
  2. Election district 06$499,300
  3. Election district 07$452,600
  4. Election district 08$437,700
  5. Election district 05$436,650
  6. Election district 04$324,050
  7. Election district 03$315,000
  8. Election district 11$315,000
  9. Election district 01$311,500
  10. Election district 02$296,400
  11. Election district 09$292,200
  12. Election district 13$249,900
  13. Election district 14$248,900
  14. Election district 15$235,200
  15. Election district 12$169,300

Median assessed value by election district: highest Election district 10 ($634,100), lowest Election district 12 ($169,300).

Median assessed value of homes in the property classes our free check covers (RES, SFR, TH, CND) for each election district with at least 50 such homes, each home's latest final value, tax years 2024 to 2026.Source: Assessment records from the county's open data (each home's latest final value, tax years 2024 to 2026), retrieved Sep 27, 2026; our calculation.

How often is property reassessed in Baltimore County?

Baltimore County is split into three SDAT reassessment areas; Area 3 is next reassessed January 1, 2027, and each area is revalued every three years.

Reassessment cycle
Baltimore County is split into three SDAT reassessment areas; Area 3 is next reassessed January 1, 2027, and each area is revalued every three years.[7]

Homes in Baltimore County

From the Census Bureau's American Community Survey: how old the homes are, what kind they are, what owners say they are worth and the property taxes they pay. These figures describe all homes together, not any one home.

Median year built
1973
All housing units, owned and rented
Single-family houses, detached or attached
71%
of 350,821 housing units
Owned homes with a mortgage or similar loan
67%
of 220,908 owner-occupied homes

Home values reported by owners

  1. Less than $50,0003%
  2. $50,000 to $99,9991%
  3. $100,000 to $199,99910%
  4. $200,000 to $299,99924%
  5. $300,000 to $399,99924%
  6. $400,000 to $499,99915%
  7. $500,000 to $749,99914%
  8. $750,000 to $999,9995%
  9. $1,000,000 to $1,999,9992%
  10. $2,000,000 or more1%

Home values reported by owners in Baltimore County: Less than $50,000 3%; $50,000 to $99,999 1%; $100,000 to $199,999 10%; $200,000 to $299,999 24%; $300,000 to $399,999 24%; $400,000 to $499,999 15%; $500,000 to $749,999 14%; $750,000 to $999,999 5%; $1,000,000 to $1,999,999 2%; $2,000,000 or more 1%.

Share of owner-occupied homes in each value range. Owners give this value in the survey; it is not the assessed value.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25075.

Property taxes owners pay a year

  1. No real estate taxes5%
  2. Less than $8002%
  3. $800 to $1,4993%
  4. $1,500 to $1,9995%
  5. $2,000 to $2,99920%
  6. $3,000 or more65%

Property taxes owners pay a year in Baltimore County: No real estate taxes 5%; Less than $800 2%; $800 to $1,499 3%; $1,500 to $1,999 5%; $2,000 to $2,999 20%; $3,000 or more 65%.

Share of owner-occupied homes by the real estate taxes paid in a year, with or without a mortgage.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25102.

Source: U.S. Census Bureau, American Community Survey (2020–2024 5-year estimates, tables B25075, B25102, B25035, B25024 and B25081), retrieved Oct 1, 2026. Survey estimates have a margin of error.

More questions about Baltimore County property tax appeals

When is the Baltimore County property tax appeal deadline?

This season's deadline has not been announced yet. We expect it to close between December 31, 2026 and January 4, 2027. This is our forecast, not an official date. In Maryland, when you get a new assessment notice you can appeal it to the Supervisor of Assessments within 45 days of the date of the notice.[11][12]

Is there a fee to file a property tax appeal in Baltimore County?

There is no fee to appeal to the Baltimore County Property Tax Assessment Appeal Board.[6]

Where do I file my first property tax appeal in Baltimore County?

In Baltimore County, an assessment appeal is filed online with the control number on the notice, or on the paper form returned to the local SDAT assessment office, within 45 days of the notice date.[13]

Can my assessed value go up if I appeal in Baltimore County?

The same Maryland rule applies in every county. Read the Maryland rule

Which details are not confirmed yet?

We show a fact only after a person has checked it against the official source. These are still being checked. Until then, ask the Baltimore County Supervisor of Assessments (State Department of Assessments and Taxation):

  • When a filing counts as on time

Property tax guides for Baltimore County homeowners

Counties next to Baltimore County

Maryland property tax appeals: all counties

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Where do these facts come from?

  1. [1]January 1, 2026 Press Release and Report (Reassessment Group 2) | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
  2. [2]January 1, 2025 Press Release and Report (Reassessment Group 1) | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
  3. [3]January 1, 2024 Press Release and Report (Reassessment Group 3) | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
  4. [4]Tax Rates 2026-2027 - Tax Table & Homestead Credit Caps - July 2026 (SDAT PDF)Official guide or FAQ · last checked Sep 30, 2026
  5. [5]Constant Yield Tax Rate 2026 | Maryland State Department of Assessments and TaxationOfficial notice, form, calendar or rules · last checked Oct 1, 2026
  6. [6]Assessment Appeal Process | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Sep 30, 2026
  7. [7]Baltimore County Reassessment Areas | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Sep 30, 2026
  8. [8]Local Tax Billing/Collection Offices | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Sep 30, 2026
  9. [9]Maryland Assessment Offices | Maryland State Department of Assessments and TaxationOfficial guide or FAQ · last checked Oct 1, 2026
  10. [10]Appeals Boards contact list (AppealsBoardsContacts) | Maryland Property Tax Assessment Appeals BoardsOfficial guide or FAQ · last checked Sep 30, 2026
  11. [11]Maryland Code, Tax - Property § 14-503 (Maryland General Assembly)Statute or regulation · last checked Sep 27, 2026
  12. [12]Maryland Code, Tax - Property § 14-502 (Maryland General Assembly)Statute or regulation · last checked Sep 27, 2026
  13. [13]Assessment Appeal Process | Maryland State Department of Assessments and Taxation (Wayback capture)Official guide or FAQ · last checked Sep 29, 2026
  14. 14.County open data: md baltimore county assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  15. 15.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Baltimore County, Maryland
  16. 16.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Baltimore County, Maryland
  17. 17.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Baltimore County, Maryland

Data credits: Census ACS (public domain) · Census county adjacency (public domain)

Not affiliated with Baltimore County or any government agency. Not legal advice. Not an appraisal.

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